JEE Main Chemistry question

Maleic and fumaric acids:

(A)Have identical m.p.
(B)Have identical solubility in water
(C)Form the same anhydride on heatingCorrect
(D)None of the above

Answer: (C)

Solution

As cis/trans geometric isomers, maleic and fumaric acids differ markedly in melting point and water solubility (ruling out A and B). On strong heating, fumaric acid first isomerizes to maleic

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Question ID VK-149915